Warning: If attempting this exercise while sitting across the table from someone, it is possible to kick that person in the shin. What you do with this knowledge is up to you. 
One (more) thing about my new running shoes: They work my calf muscles noticeably more than my old ones did. Since my calves are a large and strong muscle group that can handle more work, I consider this change to be a good thing.
One thing about the first week of school: At no other time do I wear high heels (I consider any dress shoe that’s not a flat to be “high heels”) for so many days consecutively. They shorten my calf muscles and never let me really stretch them with each step, like I would if I were wearing flats.
All in all, time for some under the table calf stretching — which, as shown on this video via YouTube and The People Sanctuary, does not actually require a table at all:
When I want a more intense stretch, I like to loop a strap (or belt or whatever) around the ball of my foot to add some resistance. That is, if I’m in a place where I can do so within the bounds of etiquette. It doesn’t work well at, say, fancy restaurants or staff meetings.
When I want a less intense stretch or when I have to operate in stealth mode (see location note above for examples), I don’t bring my lower leg all the way horizontal. Moving it 50% or 75% of the way still stretches the calf more than does not moving it at all.
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